runtime-spec
crun
runtime-spec | crun | |
---|---|---|
11 | 30 | |
3,094 | 2,797 | |
0.6% | 1.7% | |
6.4 | 9.3 | |
28 days ago | about 13 hours ago | |
Go | C | |
Apache License 2.0 | GNU General Public License v3.0 only |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
runtime-spec
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The What, Why and How of Containers
> Well, no. When people say "containers", they always mean "Docker".
Not really/necessarily. https://github.com/opencontainers/runtime-spec
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Containers - entre historia y runtimes
Otras iniciativas empezaron a surgir debido a la alta popularidad de los containers y debido a esto, en 2015 se crea OCI(Open Container Initiative) para definir un estandar para containers(runtimes e imagenes).
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Docker is deleting Open Source organisations - what you need to know
Theoretically there could be a lot of new options that pop up. There is an Open Container Initiative that has a Runtime Specification that can be implemented. youki is one example of an OCI-compliant container runtime.
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Container Deep Dive Part 1: Container Runtime
Open Container Initiative Runtime Specification aims to specify the configuration, execution environment, and lifecycle of a container. Source
- Podman + minikube
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Podman/buildah oci bundle
How I can generate oci bundle that can be run with systemd-nspawn? I've tried podman/buildah push, but generated directory/archive is not an oci bundle (https://github.com/opencontainers/runtime-spec/blob/main/bundle.md). I've tried podman image mount, but config.json file is nowhere to be found. It looks like I am missing something simple.
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Youki, a container runtime written in Rust that has passed all integration tests provided by OCI(Open Container Initiative).
In more detail, runC and youki need to implement this specification. https://github.com/opencontainers/runtime-spec
- Youki – OCI container runtime with support for cgroup2 written in Rust
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Kubernetes vs Docker: Understanding Containers in 2021
A runtime specification that describes how to unpack and run a container. OCI maintains a reference implementation called runc. Both containerd and CRI-O use runc in the background to spawn containers.
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Experimental implementation of container runtime in Rust
The immediate goal of this project(youki) is to pass all the default tests of the runtime-spec that the opencontainers is making. Of course, this is for my own learning, but I believe Rust is one of the best languages to implement a container runtime.
crun
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Show HN: dockerc – Docker image to static executable "compiler"
Yep pretty much.
The executables bundle crun (a container runtime)[0], and a fuse implementation of squashfs and overlayfs. Appended to that is a squashfs of the image.
At runtime the squashfs and overlayfs are mounted and the container is started.
[0]: https://github.com/containers/crun
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Howto: WASM runtimes in Docker / Colima
cpu: 4 disk: 60 memory: 12 arch: host hostname: colima autoActivate: true forwardAgent: false # I only tested this with 'docker', not 'containerd': runtime: docker kubernetes: enabled: false version: v1.24.3+k3s1 k3sArgs: [] network: address: true dns: [] dnsHosts: host.docker.internal: host.lima.internal # Added: # - containerd-snapshotter: true (meaning containerd will be used for pulling images) # - default-runtime / runtimes: crun (instead of the default 'runc') docker: default-runtime: crun features: buildkit: true containerd-snapshotter: true runtimes: crun: path: /usr/local/bin/crun vmType: vz rosetta: true mountType: virtiofs mountInotify: false cpuType: host # This provisioning script installs WasmEdge and builds crun with wasmedge support: provision: - mode: system script: | [ -f /etc/docker/daemon.json ] && echo "Already provisioned!" && exit 0 echo "Install system updates:" apt-get update -y apt-get upgrade -y echo "Install WasmEdge and crun dependencies:" # NOTE: packages curl git python3 already installed: apt-get install -y make gcc build-essential pkgconf libtool libsystemd-dev libprotobuf-c-dev libcap-dev libseccomp-dev libyajl-dev libgcrypt20-dev go-md2man autoconf automake criu apt-get clean -y - mode: user script: | [ -f /etc/docker/daemon.json ] && echo "Already provisioned!" && exit 0 echo "Installing WasmEdge:" curl -sSf https://raw.githubusercontent.com/WasmEdge/WasmEdge/master/utils/install.sh | sudo bash -s -- -p /usr/local echo echo "`wasmedge -v` installed!" # NOTE: I failed to Configure Wasmtime properly - turned off for now: #echo "Installing Wasmtime:" #curl -sSf https://wasmtime.dev/install.sh | bash #sudo cp .wasmtime/bin/* /usr/local/bin/ #rm -rf .wasmtime #echo "`wasmtime -V` installed!" echo "Install crun:" git clone https://github.com/containers/crun cd crun ./autogen.sh #./configure --with-wasmedge --with-wasmtime ./configure --with-wasmedge make sudo make install crun -v echo "crun installed! Replacing runc with crun:" # NOTE: replacing runc with runc is to simplify containerd config TRC=`which runc` sudo rm -rf $TRC sudo cp `which crun` $TRC echo "Configuring containerd:" sudo mkdir -p /etc/containerd/ containerd config default | sudo tee /etc/containerd/config.toml >/dev/null echo "Restarting/reloading docker/containerd services:" sudo systemctl daemon-reload sudo systemctl restart containerd # As soon as Colima writes its /etc/docker/daemon.json file (right after this provisioning script), # it will also start the Docker daemon. If we stop Docker here, the changes will actually take effect: sudo systemctl stop docker sshConfig: true mounts: [] env: {}
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Google assigns a CVE for libwebp and gives it a 10.0 score
On this note, I was really surprised to find Red Hat's OCI runtime is written in C: https://github.com/containers/crun
Is anyone working on a Rust version?
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US Cybersecurity: The Urgent Need for Memory Safety in Software Products
It's interesting that, in light of things like this, you still see large software companies adding support for new components written in non-memory safe languages (e.g. C)
As an example Red Hat OpenShift added support for crun(https://github.com/containers/crun) this year(https://cloud.redhat.com/blog/whats-new-in-red-hat-openshift...), which is written in C as an alternative to runc, which is written in Go(https://github.com/opencontainers/runc)...
- Barco: Linux Containers from Scratch in C
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Crun: Fast and lightweight OCI runtime and C library for running containers
Kubernetes needs an OCI runtime to run containers with. Crun is one implementation it can use.
Docker also appears to be able to use crun for it's engine as well. https://github.com/containers/crun/issues/37
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Best virtualization solution with Ubuntu 22.04
crun
- Why did the Krustlet project die?
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Is this an incompatibility with docker or an I doing something else wrong?
Looks like https://github.com/containers/crun/issues/255 - start there.
What are some alternatives?
youki - A container runtime written in Rust
runc - CLI tool for spawning and running containers according to the OCI specification
podman - Podman: A tool for managing OCI containers and pods.
containerd - An open and reliable container runtime
cri-o - Open Container Initiative-based implementation of Kubernetes Container Runtime Interface
wasm-micro-runtime - WebAssembly Micro Runtime (WAMR)
kaniko - Build Container Images In Kubernetes
runtime-tools - OCI Runtime Tools